Let’s talk Coolant/Antifreeze
Firsthand Mechanic Experiences with Coolant for Volvos
Get ready for winter. If you have just water or old coolant in your Volvo, it’s time to throw that stuff out and get protected. In this Volvo Forum topic, experienced owners and a mechanic step in to guide each other — with great detail — on what coolant to use, why, and how often you should change it. Plus, novel ideas on how to flush (with water and dishwashing liquid) to get rid of deposits inside cooling components.
If the corrosion didn’t all come out then do it again – and with a stronger mix. I put quite a bit in – probably enough to do 5 or more loads of dishes. I think I use about a quarter of a bottle. The lemon scent is nice.
The Volvo fluid has shown some silicate depletion in 3 years. It can go longer but I prefer the 3 year change. Following the 3 year rule ( was 2 years max for the old green heavy silicate fluids) I have seen many cars with 100-400K miles that have original rads and no visible corrosion. Hoses are toast every 4 years unless using Gates ECD which can go 8 years.
I went to NAPA to buy GO5 Zerex and …
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